SOLUTION: The lenght of a rectangular yard is 25ft more than its width. If the width were doubled, the area of the yard would be 1800ft2. Find the dimensions of the yard.
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Question 135484: The lenght of a rectangular yard is 25ft more than its width. If the width were doubled, the area of the yard would be 1800ft2. Find the dimensions of the yard.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
L=W+25
L*2W=1800
(W+25)2W=1800
2W^2+50W-1800=0
2(W^2+25W-900)=0
2(W-20)(W+45)=0
W-20=0
W=20 FOR THE ORIGINAL WIDTH.
L=20+25=45 FOR THE ORIGINAL LENGTH.
20*2(20+25)=1800
20*2*45)=1800
1800=1800
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